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Just a comment about your post and would like to touch upon a technicality.
You have everything right except I would like to caution anyone about just adding oil to a system arbitrarily.
Adding too much oil will decrease the capacity of what the system can hold, in the amount of weighed liquid refrigerant to be used. These cars have a balanced system design because it does not use a variably controlled expansion device. Much like a capillary tube system used in our refrigerators shipped all over the world.
Having less liquid is like having less water in a fire brigade bucket. Water absorbs the heat to put out a fire.
Two ounces of oil in weight is more dense than two ounces of refrigerant. Actually I'am talking volume wise simultaneously. More than two ounces of liquid refrigerant is being removed plus it is the working agent.
The variance in refrigerant weight charge seen on labels could vary for various climates around the world. The amount determined on those labels under the hood is the average mean amount derived under laboratory controlled conditions for temperature/humidity performance. The oil charge is and should be considered a constant.
Any excess oil will lay outside of the compressor. Excessivly coating the tubing walls and reducing the rate of flow of gas and the conductivity of heat into the tubes. Like having frost or dirt on the outside, impeding air contact with the tubes.
Unless you have had a desicant filter change, compressor change or a visible oil spray from a line or relief valve, leave it as it is.
The quantity of oil that is initially put into the compressor is the safe amount for lubrication required for the compressor. It allows for some oil migration into the size/amount of the tubing and back to the compressor. The compressors are sold and are designed to transfer BTU's from a defined system capacity.
The only amount of oil that needs to be added, additionally to the system will be for what ever size or amount the desicant filter will absorb. That will be in the instructions with the filter.
If you did not use a condenser fan at all, the the condenser would have to be several times larger. Then you would have to add oil for the extra tubing. It is all proportional.
Build a condenser the size of the back side of you refrigerator and pay for that up front. Great, then you don't have to pay for a fan or the power to run it for the life of the unit.
Sounds good, no fan to wear out either. Of course you lose space inside the house and inside the refrigerator though. Sales features verus the thing of about when you pay for what.
It is all proportional. Andy Rooney and I, we like that word!
Phil
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